1 // Copyright 2019 Google LLC 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // https://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 // This file is a custom fork of util/task/status_macros.h. This will become 16 // obsolete and will be replaced once Abseil releases absl::Status. 17 18 #ifndef THIRD_PARTY_SAPI_UTIL_STATUS_MACROS_H_ 19 #define THIRD_PARTY_SAPI_UTIL_STATUS_MACROS_H_ 20 21 #include <utility> 22 23 #include "absl/base/optimization.h" 24 #include "absl/status/status.h" 25 26 // Internal helper for concatenating macro values. 27 #define SAPI_MACROS_IMPL_CONCAT_INNER_(x, y) x##y 28 #define SAPI_MACROS_IMPL_CONCAT(x, y) SAPI_MACROS_IMPL_CONCAT_INNER_(x, y) 29 30 #define SAPI_RETURN_IF_ERROR(expr) \ 31 SAPI_RETURN_IF_ERROR_IMPL(SAPI_MACROS_IMPL_CONCAT(_sapi_status, __LINE__), \ 32 expr) 33 34 #define SAPI_RETURN_IF_ERROR_IMPL(status, expr) \ 35 do { \ 36 const auto status = (expr); \ 37 if (ABSL_PREDICT_FALSE(!status.ok())) { \ 38 return status; \ 39 } \ 40 } while (0) 41 42 #define SAPI_ASSIGN_OR_RETURN(lhs, rexpr) \ 43 SAPI_ASSIGN_OR_RETURN_IMPL( \ 44 SAPI_MACROS_IMPL_CONCAT(_sapi_statusor, __LINE__), lhs, rexpr) 45 46 #define SAPI_ASSIGN_OR_RETURN_IMPL(statusor, lhs, rexpr) \ 47 auto statusor = (rexpr); \ 48 if (ABSL_PREDICT_FALSE(!statusor.ok())) { \ 49 return statusor.status(); \ 50 } \ 51 lhs = std::move(statusor).value() 52 53 #endif // THIRD_PARTY_SAPI_UTIL_STATUS_MACROS_H_ 54